A Lifehacker post reminded me to spread the word about the newish mobile version of Wikipedia. Simply bookmark this page (mobile.wikipedia.org) on your wireless device, and you can then research all of your questions on the fly. When did the French finally get rid of Robespierre? What's the gist of Einstein's special theory of relativity? Where is Bhutan? You can figure it all out wherever you are.
I'm not sure how this mobile page looks on various mobile devices. But I can report that it looks a-ok on the iPhone. iPhone users can also use the new Wikipedia Mobile app that's now available in the iTunes store.